JK Rowling building £150,000 'Harry Potter' treehouses - picture

Harry Potter author JK Rowling has revealed plans to build giant £150,000 Hogwarts-esque treehouses at her home in Edinburgh.

The writer's millionaire husband Dr Neil Murray has applied for planning permission to build the two structures for their children David, 9, Mackenzie, 7, and her 18-year-old daughter from a previous marriage, Jessica.

Rowling's treehouses will be built on wooden stilts at a height of 40ft in the garden of her mansion in Barnton, BBC News reports.

The buildings - which feature spiral staircases, turrets, balconies, nature boxes and a rope bridge connection - will be "screened from view by an existing mature cypress hedge, boundary wall and security screen fence", according to a planning permission application submitted to Edinburgh City Council.

Rowling recently unveiled the cover of her first book for adults The Casual Vacancy, which focuses on an idyllic country town "at war" with itself.

She has also collaborated with Sony on "edutainment" project Wonderbook for the PlayStation 3.